Under federal law, the 8-hour shift rules are simpler than most workers expect and thinner than most workers hope. The Fair Labor Standards Act does not cap how long a single shift can run, does not require any breaks during it, and does not guarantee a minimum stretch of rest before the next one starts. What it does regulate is the workweek: once your hours cross 40 in seven consecutive days, overtime kicks in. Everything else about an eight-hour day, from meal breaks to shift turnaround, depends on your state, your city, your industry, or your employer’s own policy.
No Federal Limit on Daily Hours
The FLSA places no ceiling on how many hours an adult can work in one day. Your employer can legally schedule you for 10, 12, or 16 hours straight without violating any federal statute, so long as you receive at least minimum wage and correct overtime on any weekly hours beyond 40.
The statute defines a workweek as a fixed, recurring period of 168 hours, or seven consecutive 24-hour days. The employer picks the start day and must apply it consistently. Daily shift length is left entirely to employer policy, union contract, or local law.1U.S. Department of Labor. Handy Reference Guide to the Fair Labor Standards Act Many workers assume some rule prevents a boss from stacking a double shift. At the federal level, nothing does.
When an Eight-Hour Shift Triggers Overtime
For nonexempt workers, the federal rule is straightforward: any hours beyond 40 in a single workweek must be paid at one and a half times your regular rate.2Office of the Law Revision Counsel. 29 U.S. Code 207 – Maximum Hours A 10-hour day does not automatically earn overtime if your weekly total stays at or below 40. The federal clock resets each workweek, and daily totals are irrelevant to the federal calculation.
A handful of jurisdictions break from this pattern with daily overtime triggers. In those places, any work beyond eight hours in a single day earns 1.5 times your regular rate regardless of the weekly total, and some also require double-time after 12 hours in a day. If you live in one of these areas, an employer who schedules a standard 10-hour shift owes you two hours of premium pay even in a four-day week. Your state labor department’s website is the place to check.
One detail trips up a lot of payroll departments. Shift differentials and other premium payments must be folded into your regular rate before overtime is calculated. If you earn an extra $2 an hour for nights, the overtime multiplier applies to the base rate plus that $2.3U.S. Department of Labor. The Health Care Industry and Calculating Overtime Pay The Department of Labor flags this as one of the most common overtime errors.
Who Does Not Get Overtime
Not every worker on an eight-hour schedule benefits from overtime rules. The FLSA carves out several categories of “exempt” employees. The common ones are executive, administrative, and professional workers, along with outside salespeople and certain computer professionals.4Office of the Law Revision Counsel. 29 U.S. Code 213 – Exemptions
To qualify, you generally must meet two tests. You must earn at least $684 per week on a salary basis, which works out to $35,568 per year.5U.S. Department of Labor. Earnings Thresholds for the Executive, Administrative, and Professional Exemptions Your actual job duties must also match the exemption category. Job title alone means nothing. An executive must primarily manage a department and regularly direct at least two full-time employees. An administrative employee must exercise independent judgment on significant business matters. A professional must perform work requiring advanced knowledge typically acquired through extended specialized education.6U.S. Department of Labor. Fact Sheet 17A – Exemption for Executive, Administrative, Professional, Computer and Outside Sales Employees Under the Fair Labor Standards Act If your employer has classified you as exempt but your duties don’t fit one of these categories, you may be owed back overtime.
Breaks During an Eight-Hour Shift
Federal law does not require your employer to give you any breaks at all during an eight-hour shift. No lunch break, no 15-minute rest, nothing.7U.S. Department of Labor. Breaks and Meal Periods This is one of the most misunderstood areas of employment law.
When an employer does provide short rest breaks of roughly 5 to 20 minutes, those breaks count as paid work time. Regulators treat them as beneficial to the employer’s operations, so the clock keeps running.8eCFR. 29 CFR 785.18 – Rest You cannot be docked pay for a 10-minute break, and that time counts toward your weekly overtime total.
Meal periods work differently. A break of 30 minutes or more does not need to be paid, but only if you are completely free from work duties for the entire period.9eCFR. 29 CFR 785.19 – Meal If your boss expects you to answer phones, monitor equipment, or stay at your station while eating, that is not a true meal break and it must be compensated. You do not need to be allowed to leave the premises, but you must be genuinely relieved of all tasks.
Many states and some cities require a 30-minute unpaid meal break for shifts of a certain length, typically six or more hours. Specifics vary widely. If your state mandates a break and your employer fails to provide it, you may be entitled to an extra hour of pay as a penalty.
Lactation Breaks
The PUMP for Nursing Mothers Act, which amended the FLSA in 2022, requires employers to provide reasonable break time for nursing employees to express breast milk for up to one year after a child’s birth. The employer must also provide a private space that is not a bathroom, is shielded from view, and is free from intrusion.10Office of the Law Revision Counsel. 29 U.S. Code 218d – Lactation Accommodations These protections now extend to nearly all FLSA-covered employees, including agricultural workers, teachers, nurses, and transportation workers.11U.S. Department of Labor. FLSA Protections to Pump at Work Lactation breaks do not have to be paid unless the employer also compensates other employees for comparable break time.
What Actually Counts as Part of Your Shift
Your eight-hour shift doesn’t always start and end when you think it does. The FLSA defines “hours worked” broadly, and several categories of time that feel like non-work are compensable.
Waiting and On-Call Time
The key distinction is whether you are “engaged to wait” or “waiting to be engaged.” A receptionist reading a book between phone calls is engaged to wait and must be paid for that idle time. A plumber who goes home and waits for a possible emergency call is waiting to be engaged and generally is not on the clock.12U.S. Department of Labor. Fact Sheet 22 – Hours Worked Under the Fair Labor Standards Act If you must remain on the employer’s premises while on call, that time counts as hours worked regardless of what you do with it. Even on-call time at home can become compensable when the restrictions on your freedom are significant, like a requirement to respond within a few minutes.
Travel Time
Your normal commute from home to work is not paid. Once you report to your first job site, though, travel between locations during the workday is compensable. If you finish at one site at 5 p.m., are sent to another site and finish there at 8 p.m., then return to the employer’s office and arrive at 9 p.m., every minute from 5 to 9 counts as work time.13eCFR. 29 CFR 785.38 – Travel That Is All in the Day’s Work The same applies to time spent reporting to a meeting point to pick up tools or receive instructions before heading out.
For one-day trips to another city, all travel time is compensable, though the employer may deduct whatever your normal commute time would have been. Overnight travel is only compensable during hours that match your regular working schedule, even on weekends.
Rest Between Shifts and Clopenings
No federal law requires a minimum number of hours off between the end of one shift and the start of the next. An employer can schedule you to close at 11 p.m. and reopen at 6 a.m. without violating any FLSA provision. The practice, commonly called a “clopening,” leaves workers with barely enough time to get home, sleep, and return.
A growing number of cities have addressed the gap through predictive scheduling laws. These ordinances typically require employers in retail, food service, or hospitality to provide 10 or 11 hours of rest between shifts. If the employer schedules a shorter turnaround, it must get the worker’s written consent and often must pay a premium, usually time and a half, for the shift following the insufficient rest. Seattle, Chicago, Philadelphia, and New York have versions of these rules, each with different coverage thresholds and premium amounts. Oregon has a statewide law covering the same ground.
If you work in a jurisdiction without predictive scheduling protections, your only guaranteed rest between shifts comes from a union contract or internal company policy.
The Real Daily Caps: Minors and Commercial Drivers
Two groups of workers face hard federal ceilings on daily hours.
Workers aged 14 and 15 have strict caps in non-agricultural jobs:14U.S. Department of Labor. Fact Sheet 43 – Child Labor Provisions of the Fair Labor Standards Act
- No more than 3 hours on a school day, and only outside school hours
- No more than 8 hours on a non-school day
- No more than 18 hours in a school week
- No more than 40 hours in a non-school week
- Only between 7 a.m. and 7 p.m., extended to 9 p.m. from June 1 through Labor Day
A standard eight-hour shift is only available to 14- and 15-year-olds on days when school is not in session. Workers aged 16 and 17 face no federal hour restrictions, though some states impose additional limits.
Commercial motor vehicle operators are the other group with hard caps. Federal hours-of-service rules enforced by the Federal Motor Carrier Safety Administration set the following limits:15Federal Motor Carrier Safety Administration. Summary of Hours of Service Regulations
- Property-carrying drivers: maximum 11 hours of driving after 10 consecutive hours off duty, within a 14-hour on-duty window
- Passenger-carrying drivers: maximum 10 hours of driving after 8 consecutive hours off duty, within a 15-hour on-duty window
- Mandatory 30-minute break after 8 cumulative hours of driving
- Weekly caps of 60 hours in 7 days or 70 hours in 8 days
Aviation and nuclear power operate under their own federal rest requirements. In any regulated safety-sensitive field, your daily and weekly hours are likely capped well below what the FLSA alone would allow.
If Your Employer Breaks the Rules
If your employer fails to pay overtime, shaves time off recorded hours, denies required lactation breaks, or violates child labor limits, you can file a complaint with the Department of Labor’s Wage and Hour Division. File online or call 1-866-487-9243. You will need the employer’s name and address, a description of your job duties, and details about how and when you were paid.16Worker.gov. Filing a Complaint With the U.S. Department of Labor’s Wage and Hour Division The nearest field office will contact you within two business days.
You have two years from the date of a violation to file an FLSA claim, or three years if the violation was willful. A court can award liquidated damages equal to the full amount of unpaid wages, effectively doubling what the employer owes.17Office of the Law Revision Counsel. 29 U.S. Code 216 – Penalties An employer who underpaid you $5,000 in overtime can end up owing $10,000 before attorney fees. The FLSA also prohibits retaliation against employees who file complaints or take part in investigations.